D=12
Because if you write down the equation 4x-8=40 and plug in 12. 4 times 12 is 48
. 48-8 equals 40
He would need to sell 28 because
12.50*28=350 and 350+50=400
Assuming the interest is simple interest, as opposed to compound interest,
10 i think..... plz don't report me
Step-by-step Solution
Problem to solve: 6x−8y−5х+3y
solving method: simplifying
Combining like terms -8yand 3y
6x−5y−5
Final Answer:
6x−5y−5